The famous lines from “the rime of the ancient mariner,” might soon come true for people living on land. Though ¾ of the universe is full of water bodies but we can all foresee an acute water crisis, unless giant steps are taken in this regard. Mammoth industrialization, demographic explosion & urbanization pose pressure on water availability and contamination. Wastewater is any water that has been contaminated by pollutants such as pathogens, organic and inorganic materials, heavy metals and a wide range of other toxins. To avoid facing this crisis- it is imperative for us to save water and opt for waste water treatment for a safe and better future.